keith



H. M. KEITH.

PUMP.

APPHCATIQN man APR. 29, 1919.

Patented Mar. 23, 192()u 2 SHEETS-SHEET l.

@Wemag H. M KEITH.

PUMP.

- APPLKCATION FILED APR. 29. |919.

Patented Mar. 23, 1920.

2 SHEETS-SHEET 2k wwf mm.

ahum/Lito@ fjifeth/ @Sw m @wi/14039@ M da `Hl'lINIIRZ M. KEITH, OF FBANKFORT, ILLINOIS.

' PUMP.

Specification of Letters Patent.

Patented Mar. 23, 1920.

Application filed April 29, 1919. Serial No. 293,381.

To all whomz't may concern:

Be it` known that I, HENRY M. KEITH, a citizen of the United States, residing at Frankfort, in the county of Franklin and State of Illinois, have invented new and useful Improvements in Pumps,of which the following is a specification.

This invention relates to pumps and aims to provide a rotary pump in which may be employed one or more rotors, as desired.

Another object of the invention is the provision of means operated by the drive shaft of the pump for adding to the force of the water supply.

Another object is to provide a novel form of rotor in which wear due to operation is automatically taken up, resulting in practically eliminating leakage and thereby increasing the power of the pump.

Another object is the provision of a pump of the above character, which is exceedingly simple of construction, durable in operation and which may be manufactured and operated at a moderate cost.

Other objects and advantages of the invention will appear as the following description is read in Aconnection with the accompanying drawings.

i In the drawings:

Figure 1 is a side elevation ofa pump embodying the present invention.

Fig. 2 is a vertical sectional view' of the same.

Fig. 3 is a section through one of the rotor chambers taken at right angles to Fig. 2.

Fig. 4 is a detail sectional view of a modified form of rotor, and

Fig. 5 is a sectional view on the line 5-5 of lng.` 4...

Referring to the drawin s in detail, wherein like characters of re erence denote corresponding parts, the pump is made up of a casing formed of separate sections 10, partition plates 11 and end plates 12, the partition plates dividing the Vcasing into separate compartments.

One of these compartments, for example, a compartment 13, accommodates a fan 14, the latter being mounted upon a shaft 15 disposed transversely of the compartments and operating in bearings 16 provided in the end plates 12. The compartments 13 may, therefore, be styled a suction chamber, water being drawn into this chamber through a pipe 17 and entering the chamber through. ports 18, from whence it passes through a ort 19 into a distributing chamber 20. he remaining compartments, which are formed by the sections 10 and the plates l1, provide chambers 21', for the ac! commodation of rotors 22, which are eccentrically mounted up'on the shaft 11. Each of the rotor chambers 21 communicate with the dlstributing chamber 20 through ports 23,

so that water drawn in through the pipe 17 is distributed to various Arotor chambers, of which there may be any desired number. The rotor chambers 21V are also provided `with outlet ports 24, which are controlled by valves 25, the water discharging from the chambers 21 entering a common discharge chamber 26 and passing therefrom into a pipe 27.

` Each of the rotors 22 is preferably formed of a pair of disks 28, which are mounted for sliding movement longitudinally of the shaft 15, but held against rotar movement with respect to the shaft. hey are forced apart through the action of springs 29, which are seated in sockets or depressions 30, provided in the opposed faces of the disks 28. AThe purpose of this is to force the outer faces of the disks against the side walls of the chambers 21 to prevent leakage.

\ Surrounding each of the rotors is a ring 31 and the peripheral edge of each disk is provided with a oove 32, the rin 31 forming one wall o this groove. suitable packing 33 is inserted in the groove 32 and the springs 29 act to take up wear on this pack. The4 rotors 22 are so mounted upon the shaft 15 as to provide continuouscontact with the inner periphery of the cham` bers 21 during their rotary movement, and to insure this contact to prevent water from passing between the rotor and the casing at the point of such contact, there is provided a packing block 34, which operates in a transverse groove 35 'provided in the rotors,l

a spring 36, which is seated within this groove, serving to force the block outward.

Projecting within each of the rotor chambers 21 is a spring actuated abutment 37,

the latter being positioned 'between the inletthe rotor and this chamber and the discharge chamber 26 is open at its bottom, a. removable plate 39 covering so vthat' access may be had to the interior of these chambers, when desired. The shaft 15 passes through one of the end plates12,

which is suitably packed, as indicated at 40, so as to prevent leakage, the said shaft .Carrying a. fly-wheel or pulley-41.

In Figs. 4 and 5, therel is illustrated .a

wall of the seat formed in the periphery ofv ,the rotor is vsimilarly inclined, the purpose being to force the split ring outward 4to ta'ke up wear,- this action being 4due to the action of springs 46, similar to the Springs 29, previously mentioned. 'The split rlng 44 is surrounded 'by a ring 47, whichtogether with the ring 44 and the adJacent edge or peri hery of the disk 42 provide a groove 48 or the accommodation of soft metal or other packing. In this form of rotor there is also provided a packing or wear block 49, similar to the block 34, previously described.

The invention is susceptible of various changes in its form, proportions and minor details of construction and the right is herein reserved to make such changes as properly fall within the scope of the appended claims.

Having described the invention, what is ,claimed is:

l. A rotary pump embodying a casing divided into separate rotor chambers having inlet and outlet ports, means for supplying Water to the rotor Chambers, a shaft journaled for movement within said casing and rotors eccentrically mounted upon'said shaft 'and' operating within the rotor chambers, each of said rotors comprising separate disks mounted lfor sliding movement upon the shaft, means for forcing the disks apart for contact with the walls of the rotor chamlbers and means carried by the rotors' for contact with the inner periphery of said chambers.

' naled for movement within said casingand t rotors eccentrically mounted upon said shaft and operating Wlthin the 4rotor chambers, each of said rotors comprising separate disks mounted for Isliding movement upon the shaft, means for forcing the disks apart these openings,

'one wall of `periphery of each of the rotors.

for contact with the Walls of the rotor chambers, means carried by the rotors for oontact with the inner periphery of said chambers and a. longitudinally movable spring acl tuated abutment positioned within each of therotor chambers between the inlet and outletports.

3. A rotary pump embodying a casing divided into separate rotor chambers having inlet and outlet ports, means for supplying water to the rotor chambers, a. shaft journaled for movement within said casing and rotors eccentrically mounted upon said shaft and operating within the rotor chambers, each of said rotors comprising separate -disks mounted for sliding movement upon the shaft, means for forcing the disks apartfor contact with the walls of the rotor chambers, a ring surrounding each of the rotors and a packing located within a 'groove formed aroundeach of the rotors, said groove being formed by said ring.

4./A rotary pump embodying a. casing divided into separate rotor chambers having inlet and outlet ports, means for supplying water to the rotor chambers, a shaft journaled for movement wit-hin said casin and rotors eccentricall mounted upon sai shaft-and operating within the rotor chambers, each of said rotors comprising separate disks mounted for sliding movement upon the shaft, means for forcing the disks apart for contact with the walls of the rotor chambers, a ring surrounding each of the rotors, a packing located within a groove formed around each edge of the rotors, one wall of said groove being formed by said ring and an expansible ring positioned between the first mentioned ring and the outer 5. A rotary pump embodying a casing divided into separate rotor chambers having `inlet and outlet ports, means for supplying water to the rotor chambers, a shaft'journaled for movement within said casing and rotors eccentrically mounted upon said shaft and operating within the rotor chambers, each of said rotors comprising separate disks mounted for sliding movement upon the shaft, means for forcing the disks apart for contact with the walls of the rotor chambers, a ring surrounding each of the rotors, a packing located within a groove formed around each edge of the rotors, one wall of said groove being formed by said ring and an expansible ring positioned between the first mentioned ring and the outer periphery of each of the rotors and controlled by the sliding movement of the rotor disks.

In testimony whereof I aix my signature.

HENRY M. KEITH. 

